XNOR (exclusive NOR) gates

Simplify your signal chain with combinational logic

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Resolve common combinational logic issues such as comparing digital signals or detecting phase differences in input signals, or comparing when two inputs are the same with our portfolio of XNOR gates. Included are open-drain and Schmitt-trigger device options available in 4 channel configurations.

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Featured XNOR gates

Why should you choose our XNOR gates?

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Wide operating voltage range

Select from products ranging from 2 V to 18 V to fulfill all of your application needs.

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Diverse package offering

Both leaded and nonleaded packages available with pin counts ranging from 5 to 20 pins.

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Schmitt-trigger inputs

Our new HCS family features Schmitt-trigger inputs allowing for superior noise immunity. 

Common applications of XNOR gates

A phase detector outputs a PWM signal that represents the phase difference between the input signals. Refer to this video to learn how an XNOR gate can work as an inverted phase detector.

Featured products for XNOR gates
SN74HCS266 ACTIVE Schmitt-trigger inputs quadruple 2-input exclusive-XNOR gates with open-drain outputs
SN74HCS7266-Q1 ACTIVE Automotive 4-ch, 2-input, 2-V to 6-V low power XNOR (exclusive NOR) gates with Schmitt-Trigger input
SN74HCS7266 ACTIVE Quadruple 2-input XNOR gates with Schmitt-trigger inputs

Technical resources

Application brief
Application brief
Understanding Schmitt Triggers (Rev. B)
Most CMOS, BiCMOS and TTL devices require fairly fast edges on the high and low transitions on their inputs. If the edges are too slow they can cause excessive current, oscillation and even damage the device.
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Application note
Application note
Reduce Noise and Save Power with the New HCS Logic Family (Rev. A)
TI's next-generation Schmitt-trigger Integrated High-speed CMOS family is designed to help you achieve goals to improve signal integrity, reduce power, and increase robustness in Automotive, Industrial and Personal Electronics.
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Application brief
Application brief
User Fewer Inputs to Monitor Error Signals
Error source signals can be combined to reduce the number of required inputs to a system controller when it is more important to know that an error has occurred than it is to know which device triggered the error.
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